Don’t use using directives (“using namespace”) in tests

util/mach/symbolic_constants_mach_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/mach/symbolic_constants_mach.h"
 
 #include <mach/mach.h>
 #include <string.h>
 
 #include "base/basictypes.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 #include "util/mach/mach_extensions.h"
 
 #define NUL_TEST_DATA(string) { string, arraysize(string) - 1 }
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 // Options to use for normal tests, those that don’t require kAllowOr.
 const StringToSymbolicConstantOptions kNormalOptions[] = {
     0,
     kAllowFullName,
     kAllowShortName,
     kAllowFullName | kAllowShortName,
     kAllowNumber,
     kAllowFullName | kAllowNumber,
     kAllowShortName | kAllowNumber,
     kAllowFullName | kAllowShortName | kAllowNumber,
@@ skipping 1013 matching lines @@
   {
     SCOPED_TRACE("trailing_NUL_short_new");
     TestStringToThreadStateFlavor(base::StringPiece("FLAVOR_LIST_NEWS", 15),
                                   kAllowShortName,
                                   true,
                                   THREAD_STATE_FLAVOR_LIST_NEW);
   }
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad